baber/WOPTO huggingface dataset:
Patent GB-414284-A (GB)
Title: Improvements in or relating to cans or like metal containers
IPC: B65D51/16
Filed: 1933-12-16
Abstract: 414,284. Cans &c. ARMSTRONG, J. J. V., 12, Church Street, Liverpool.-(Continental Can Co., Inc. ; 100, East 42nd Street, New York, U.S.A.) Dec. 16, 1933, No. 35450. [Class 66.] To permit the escape of gas evolved by the contents of a can &c. an elastic disc 8 carried by a cap 7 is applied over a raised seating, preferably dome-shaped, formed in one of the ends and provided with an opening which is sealed by the disc except when it is raised from the seating by. internal pressure. The disc is engaged between the rolled edge and the shoulder 10, Fig. 3, of the cap which is itself secured in place by bending or rolling the wall of a recess in the end inwardly at 14. Spaced indentations 13 permit the gas to pass between the seating and the edge of the recess, and the upper surface of the disc is open to the atmosphere. Fig. 5 shows a modified construction in which the cap is soldered to the seating, the disc in this form being provided with an aperture 6b out of register with apertures 6<a> formed in the seating.
Patent GB-508071-A (GB)
Title: Improvements in or relating to hydraulic brake apparatus
IPC: B60T11/22
Filed: 1937-12-22
Abstract: 508,071. Hydraulic brakes;pistdn packing. THOMAS; G. J. Dec. 22, 1937, No. 35513. Convention date, April 12. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 29, 1938.] [Class 103 (i)] A master cylinder for hydraulic brakes comprises a vertically slidable piston 14 having an upper recess, a passage 16 through the base of the recess to permit communication between the reservoir 7, 8 and the cylinder 3, normally and during the return stroke, a piston rod 17 with a valve head 18 to close the passage during the operative stroke and a member 33 between the valve head and the wall of the recess for coupling the rod 17 to the piston with lost-motion, during the return stroke. The member 33 as shown is a semicircular strip of spring steel which is bent to a frusto-conical shape and engages a groove in the wall of the recess. It may have a number of holes for the passage of the liquid and for the insertion of a tool by which it can be compressed for attaching it. The passage 16 may be fitted with a rubber bushing. The reservoir comprises upper and lower detachable parts 7, 8 within which is disposed a bell-crank 20 connected to the piston-rod 17 and to a link 29 extending to the pedal. The lever is mounted on a part 21 secured to the reservoir by a nut 26. The coupling 21 for the conduit 2 screws into a cap 36 which is crimped over the flanged end of the cylinder 3. A seal between the piston 14 and the cylinder comprises a ring 38 of rubber fitted into a groove in the cylinder and which is initially of lesser internal diameter than that of the cylinder but which is compressed by the piston so that it extends into a lower tapered part of the groove.
Patent GB-622144-A (GB)
Title: Improvements in or relating to conveyor systems
IPC: B65G47/61
Filed: 1946-12-02
Abstract: 622,144. Endless belt conveyers. KING, Ltd., G. W., and KING, D. M. Dec. 2, 1946, No. 35662. [Class 78 (i)] In a conveyer system of the kind having a main conveyer which includes one or more carriers, trolleys or the like adapted to be moved along a predetermined path, an auxiliary conveyer adapted to be driven in a direction parallel with the main conveyer is associated with each carrier, trolley or the like and is so disposed as to serve as a load supporting platform and a transfer means is provided which is movable into the path of any carrier trolley or the like and operative to transfer a load to or to receive a load from the auxiliary conveyer associated with the load. Carriers 13, Fig. 1, suspended from rollers 11 which are guided by a beam 10, are moved by an endless chain conveyer 12 and each supports a load carrying auxiliary endless belt conveyer 14. An endless belt conveyer 15 is moved into the path of each of the auxiliary conveyers in turn and travels bodily with it for a brief period during which both conveyers operate and transfer the load from one to the other after which the conveyer 15 drops below the loaded or unloaded conveyer 14 and moves in a cyclic path into position to load or unload the next carrier. The conveyer 15 is intermittently driven by a motor 19 and is raised and lowered relative to its supporting structure 20 by means of a lifting unit 22, said structure being reciprocated along a track 30 by means of a connecting rod 23 attached to an endless chain 24 driven through a reduction gear 28 by a motor 26. In a modification the auxiliary conveyers 14 on certain carriers 13 are arranged to load and unload transversely to the direction of travel of the main conveyer. Specification 595,599 is referred to.
Patent GB-462200-A (GB)
Title: Improved classifier
IPC: B03B13/00
Filed: 1935-12-24
Abstract: 462,200. Washing granular materials. WUENSCH, C. E. Dec. 24, 1935, No. 35725. Convention date, Nov. 23. [Classes 59 and 82 (ii)] [Also in Group XXXV] A classifier comprises a tank with a conical bottom, means for introducing material to be classified into the top of the tank, a peripheral launder around the upper portion of the tank divided into an inner and outer portion by a partition with a vertically adjustable weir, agitating means in the lower portion of the conical bottom, means for withdrawing the overflow from the outer portion of the launder and for returning it to the conical bottom of the tank at a point above the agitating means, means for continuously withdrawing a mixture of liquid and coarse solids from the bottom of the tank below the agitating means, and means for withdrawing a mixture of liquid and fine solids from the inner portion of the launder. The classifier has a conical bottom portion 1 and at the top has a central splash ring 2 and a peripheral launder 3 divided into two compartments by a partition 4 having an adjustable overflow lip 5. An agitator 8 in the form of a conical cage is secured to the bottom of a hollow shaft 6 driven by a gear 7, and a float 9 located inside the cage is attached to a rod 10 passing up through the hollow shaft 6. When the float rises a contact 11 on the upper end of the rod 10 rises and opens a circuit with the result that the speed of a pump 16 which withdraws settled material from the bottom of the classifier is increased. The mixture withdrawn from the inner compartment of the launder 3 may be further concentrated by flotation and the overflow from the outer compartment passes to a sump 18 from which it is pumped to a tank 20 to which water is supplied through a float-operated valve 21. The liquid from this tank is passed back into the classifier through peripheral openings 23 provided with guard members 24, the return flow to the classifier being governed by a solenoid-operated valve 25, which is controlled by the movement of a hydrometer 27 in the upper part of the classifier. The classifier is connected in closed circuit with a grinding mill 12, the material to be classified, the coarse products removed by the pump 16, and water being fed into a box 14 and raised into the mill by a scoop 13. The feed shoot 15 to the box 14 is vibrated by means 31 and the vibration is interrupted when the electric circuit is opened by the rising of float 9 or when a float 30 in the upper part of the classifier rises and opens another electric circuit. A hydrometer 34 located within the splash ring 2 controls the supply of water to the box 14 by opening or closing an electric circuit containing a valve, the supply of water being increased if the density in the upper part of the classifier rises. The hydrometer 27 is thus used to control the density of the material passing into the inner compartment of the launder 3 and the float 30 to control the volume of this material.
Patent GB-1191636-A (GB)
Title: Process for the manufacture of Halosilanes
Inventor: HABIBI KAMRAN
IPC: C07F7/12
Filed: 1966-08-10
Abstract: 1,191,636. Preparation of phenylhalosilanes. MIDLAND SILICONES Ltd. 3 Aug., 1967 [10 Aug., 1966], No. 35750/66. Heading C3S. Phenylhalosilanes are prepared by reacting in the vapour phase chlorobenzene with a halohydrosilane of the formula RHSiX 2 , where R is alkyl or halogen and X is halogen, at a temperature of 150‹ to 350‹ C. in the presence of magnesium. The magnesium may be mixed with a known catalyst, e.g. copper, and with a particulate diluent, e.g. crushed silica. It is preferably in the form of pellets and used in a fluidized bed technique, but may be in the form of a spiral wire or gauze. The magnesium may first be contacted with the chlorobenzene in an induction step before introducing the silane. In the example, a mixture of PhMeSiCl 2 , PhSiHCl 2 , PhSiCl 3 , Ph 2 MeSiCl and Ph 2 SiCl 2  is prepared from MeHSiCl 2 .
Patent GB-791235-A (GB)
Title: Improvements in or relating to the tailgates of tipping vehicles
IPC: B60P1/273
Filed: 1954-12-10
Abstract: 791,235. Tipping vehicles. PILOT WORKS, Ltd., and BENTLEY, E. H. Dec. 8, 1955 [Dec. 10, 1954], No. 35758/54. Class 108(1) A tipping body 2 is provided with a tailgate 1 pivoted along its upper edge and is automatically released when the body is tipped by the bell crank lever arm 6 leaving a spring-loaded abutment 5 on the vehicle chassis thereby allowing the rod 8 to move forwardly under the action of spring 11 and rotate the bell-crank 14 clear of the abutments 15 on the tailgate.
Patent GB-1471424-A (GB)
Title: Sampling circuits
IPC: H03K17/60
Filed: 1974-08-15
Abstract: 1471424 Transistor sampling circuits WESTERN ELECTRIC CO Inc 15 Aug 1974 [21 Aug 1973] 35939/74 Heading H3T [Also in Division H2] In a sampling circuit having an input portion transformer coupled to an output portion, errors due to voltage drop across a sampling transistor in the input portion are compensated by a further transistor in the output portion, the further transistor being enabled synchronously with the sampling transistor and having its base-emitter and base-collector junctions respectively forward and reverse biased. An input voltage across 11, 12, Fig. 1, is sampled by a transistor 15 opened by clock pulses through transformer 17. The voltage sample is less than the input by the emitter-collector voltage of transistor 15 and this error is made good by the same voltage drop in transistor 18 controlled in synchronism with transistor 15. One or both transistors 15, 18 may be PNP with suitable arrangements of transformer windings. In another embodiment, Fig. 3, clock pulses on winding 42 make transistor 38 conduct, the voltage of the sample pulse being the proportion of the input appearing across resistor 36 plus the emitter base drop of transistor 38. The latter is subtracted from the output of secondary winding 41 by the emitter-base drop of transistor 46. The sampling circuit may be used in a pulse width modulated D.C. to D.C. converter, Fig. 2 (not shown).
Patent GB-1174842-A (GB)
Title: Process for the Manufacture of Terephthalic Acid Glycol Esters
IPC: C08J11/00
Filed: 1967-08-07
Abstract: 1,174,842. Bis-(beta-hydroxyethyl) terephthalate. FARBWERKE HOECHST A.G. 7 Aug., 1967 [6 Aug., 1966], No. 36092/67. Heading C2C. Esters which are soluble in water under pressure, and at up to 130‹ C., consisting of the title compound and only small amounts of dimers and triers, are prepared by reacting terephthalic acid or its esters, semiesters or glycol polyesters with 5-50 moles ethylene glycol at 150-300‹C., and freeing the mixture from volatile constituents at below 150‹ C.
Patent GB-508786-A (GB)
Title: Improved apparatus for feeding and sorting material in sheet or plate form
IPC: B21D43/09
Filed: 1937-12-30
Abstract: 508,786. Gauging-apparatus; photo-electric control apparatus. FARRER, J. O. (Continental Can Co., Inc.) Dec. 30, 1937, No. 36167. [Class 106 (ii)] [Also in Group XL] Apparatus for sorting sheets according to thickness comprises two or more sensing devices adapted to be moved by spaced thickness portions of material moving therepast, and two or more control switches, one for each sensing device and actuable thereby, the switches being connected in series with the ejecting mechanism whereby operation of the latter is controlled only when both or all the switches are actuated. The sheets S to be gauged are passed over rollers 9 carried by brackets 8 sliding in parallel guides and adjustable by micrometer screws 14. The rollers 9 are in advance of one another and not in alignment. Opposite the rollers 9 are rollers 29 carried by the short arms of L-shaped levers 28 pivoted about axes 30 which also while parallel are not in alignment. The levers are normally held against screw stops 31 by springs 32 the compression on which is adjustable by screws. The upper, ends of the levers carry spring contacts 25 co-operating with micro-switches 24 of type described in Specification 419,917. When a sheet of the correct thickness and over passes between the rollers, the circuit of a solenoid 41 is made to lower a deflector 38 into a hole 42 and deflect the plate between feed rollers 44 to a conveyer 45. When the pile of plates is sorted the gauge is set for a minimum thickness and the plates passed through again. Instead, two sets of gauging rollers may be used. In a modification, the lower roller is on a fixed axis while the upper roller 51 is on the rod of a plunger 59 and is normally urged towards the roller by a spring 60. Above the plunger 59 is a small plunger 63 separated therefrom by liquid. This plunger is pivoted to the short arm of a twoarmed lever 72, 73 the long arm being bifurcated and arranged to move in front of a -slit 69 through which emerges a beam of light. Each time a sheet separates the gauge rollers a sufficient distance to cause the lever 72 to uncover the slit 69, the beam falls on a photo electric cell and energizes a relay to move the deflector.
Patent GB-778814-A (GB)
Title: Improvements in or relating to apparatus for dispensing powdered materials in measured quantities
Inventor: BERWICK ALBERT GEORGE
IPC: G01F11/24
Filed: 1954-12-14
Abstract: 778,814. Dispensing measured quantities of powdered material. GASKELL & CHAMBERS, Ltd., [trading as NON-DRIP MEASURE CO.]. Nov. 28, 1955 [Dec. 14, 1954], No. 36206/54. Class 106 (5). Apparatus for dispensing measured quantities of powdered material comprises a manually operable rotor 4 supported within a housing 1 having an inlet port 17 communicating with a supply hopper (not shown) and a discharge port 16, the rotor having one or more pockets 5a, 5b each closed at its inner end by a gauze screen 13 having a mesh size such that it will support a charge of powdered material but will permit free passage of air. During the charging of the upper pocket, air is displaced downwardly through the gauze screens 13 and ensures emptying of the lower pocket. The rotor is secured by a spring loaded latch 12 and provided with a hand lever 10. Its movement may be limited to 180 degrees by a flange 14 co-operating with a fixed stop (not shown) or a spring-loaded ball may be provided to permit rotation in 180 degrees steps. The screens 13 may have a friction tight fit within the pockets or they may be soldered. Alternatively, to enable the capacity of the pockets to be varied, the screens may be secured by removable spring clips. To assist the flow of material, which may be cocoa, powdered milk or chocolate, the walls of the hopper are inwardly tapered from either side of a central point. Specification 683,842 is referred to.
Patent GB-771361-A (GB)
Title: Improvements in the manufacture of bread
IPC: A21D2/04
Filed: 1954-09-21
Abstract: In making bread from unbleached, untreated flour, the dough is prepared by mixing the ingredients including the whole of the flour in a dough-making machine working at normal speed until the mixture is in a crumbly condition, subjecting the crumbly mixture in the machine to an atmosphere enriched with oxygen, which atmosphere is preferably of pressure about the same as that of the external atmosphere and is not above 5 lb./ sq. in. in excess thereof, and working the mixture in the machine until the clear condition, i.e. the condition in which each flour particle is hydrated, is attained. Ingredients other than flour include yeast, salt and water.  A small proportion, e.g. 0.1 per cent, of soya flour prepared without heat treatment may be incorporated.
Patent GB-512298-A (GB)
Title: Improvements in means for cooling the oil supply for the engines of rear-engined motor vehicles
IPC: B60K11/08
Filed: 1938-12-14
Abstract: 512,298. Cooling motors &c. ZAVODY RINGHOFFER-TATRA AKCIOVA SPOLECNOST. Dec. 14, 1938, No. 36406. Convention date, Dec. 18, 1937. [Class 79 (iii)] Means for cooling the engine oil supply in a rear engined motor vehicle comprises one or more air inlet slots 3 in the bottom of the vehicle body, communicating with an air conduit 7 extending under the base of the engine to outlet apertures 6 in the end of the body, the engine base 4 being broadened and preferably formed with fins 8 projecting into the conduit. If, as shown, the rear axle is in front of the engine, the slot 3 may be continued through shields 9 enclosing the half-axles. The facing edge of the slot may be bent downwardly as at 3a.
Patent GB-1038951-A (GB)
Title: Improvements in and relating to mercury arc rectifiers
Inventor: ALDWORTH HAROLD ERNEST
IPC: H01J13/04
Filed: 1961-10-11
Abstract: 1,038,951. Metal vapour converters. ENGLISH ELECTRIC CO. Ltd. Oct. 9, 1962 [Oct. 11, 1961], No. 36480/61. Heading H1D. A mercury arc rectifier comprising an annular electro-conductive envelope mounted between axially spaced insulating walls has a grid supported within the envelope by mounting means which also provide an electrical connection between the envelope and grid. A mercury arc rectifier has a valve envelope 10 mounted between axially spaced ceramic walls 11, 11 and an annular grid 12 secured at 13 to a grid support member 14. The member 14 comprises a hollow tubular portion 15 welded to an outwardly extending hollow flange portion 16. The hollow construction of the support member 14 provides an enclosure 17 which contains a pool 18 of mercury, a tubular shield 19 extending upwardly from the member 14. The valve envelope 10 consists of welded segments 20-23 arranged to provide an annular internal recess 24 and two annular re-entrant spaces 25, 26, the flange portion 16 being resiliently supported in the recess 24 by means of strip springs 27 which also effect an electrical connection between the portion 16 and the envelope 10. A baffle structure 28 surrounds the envelope 10 and is separated therefrom by electroconductive springs 29 allowing cooling oil to flow over the external surfaces of the envelope 10 as indicated by arrows. A resilient annular member 30 attached to an annular ceramic wall 31 is arranged to exert radial pressure on the baffle 28. Heat developed by the grid 12 causes boiling in the mercury pool 18, the vapour ascending into the flange portion 16 where it condenses and returns to the pool 18 thus assisting the grid cooling.
Patent GB-368348-A (GB)
Title: Improvements in or relating to the manufacture of acetic acid
Filed: 1930-12-04
Abstract: In the oxidation of liquid acetaldehyde by air or oxygen for the production of acetic acid, the concentration of the acetic acid in the reaction mixture is maintained at a point not exceeding 70 per cent; for instance, it may be maintained at 50-70 per cent by additions of acetaldehyde.  A known catalyst may be used, such as manganese acetate, uranium oxide, ferric oxide, ferric acetate, chromium oxide, vanadium pentoxide, or the catalysts described in Application 367,863 (manganic salts) or in Specifications 154,304 and 154,680, [both in Class 2 (iii), Dyes &c.] (china clay or kaolin or the residue left on calcining animal charcoal or mixtures thereof with sodium acetate), and normal, reduced, or increased pressure may be employed.  The oxidizing gas may be introduced in fine bubbles, with agitation and the temperature may be from 0 to 40 DEG  C. or more.  Cooling to 0-5 DEG  C. may be employed advantageously during the initial stages and/or intermittently during the process.  The reaction vessel may be provided with a condenser, and the escaping gas may be scrubbed with acetic acid or with some of the reaction liquor, and the liquor returning to the reaction vessel may do so in the form of spray.  Catalyst may be added with the aldehyde continuously or intermittently.  The acid may be freed from aldehyde by heating or fractionation and further distilled with or without permanganate. Specification 366,022 also is referred to.
Patent GB-338918-A (GB)
Title: Improvements relating to lifting jacks
IPC: B66F3/30
Filed: 1929-08-31
Abstract: 338,918. Venner, D. J. V., and Eversure Accessories, Ltd. Aug. 31, 1929. Jacks.-The extension crutch of a hydraulic jack has a grooved stem a adapted to be engaged by a pair of spring-pressed catches c mounted in a casing d. A cam f on a spindle g in the casing has a head h which can be rotated to disengage the catches for quick lowering. Specification 8231/13 is referred to.
Patent GB-1451890-A (GB)
Title: Containers and closures therefor
IPC: B65D35/42
Filed: 1972-08-07
Abstract: 1451890 Closures for collapsible containers UNILEVER Ltd 1 Nov 1973 [7 Aug 1972] 36803/72 Heading B8T A container comprises a nozzle 1 and a closure 6, the closure being a single-piece moulding in the form of a stirrup having two legs 7 pivotably attached to the nozzle, e.g. by hinge straps of plastics material or by diametrically opposed trunnions disposed on the closure or, as shown, on the nozzle, so that the closure pivots with a wiping action from an open position to a sealing position. Correct seating and sealing is assisted by an internal dome 9, a pair of webs 10 on the closure locating in respective slots (5, Fig. 3, not shown) on the nozzle, an annular sealing V-projection and groove (not shown), and residual tension in the legs of the stirrup. The closure and nozzle may be moulded in one piece including a frangible link and then separated before being rejoined at the trunnions to provide pivoting. In an alternative construction (Fig. 4, not shown) the open hook form of stirrup leg shown is replaced by a closed form in which an enlarged hole can slip over the trunnions and a connected smaller hole can grip the trunnions to give secure connection.
Patent GB-1475309-A (GB)
Title: Process for the production of maleic anhydride
IPC: B01J27/00
Filed: 1973-08-03
Abstract: 1475309 Maleic anhydride UCB 1 Aug 1974 [3 Aug 1973] 36943/73 Heading C2C [Also in Division B1] Maleic anhydride is made by the vapour phase oxidation of butane in the presence of an oxidic catalyst comprising phosphorus, vanadium and cobalt and/or nickel. The catalyst may be in a fixed or fluidized bed and have 0À5 to 3 atoms of phosphorus and 0À05 to 0À5 atoms of Group VIII metal per atom of vanadium. The reaction conditions may be 1-4% v butane, 99-96% v air, 350-550 C., at least atmospheric pressure and a contact time of 0À5-45.